class AddColumnsToGroups < ActiveRecord::Migration
  def self.up
    add_column :groups, :membership_id, :integer
    add_column :groups, :permission_id, :integer
    add_column :groups, :groups_section_id, :integer
  end

  def self.down
    remove_column :groups, :groups_section_id
    remove_column :groups, :permission_id
    remove_column :groups, :membership_id
  end
end
